异步振荡的特点为失步的发电厂间联络线的输送功率()。
参考答案:往复摆动
---How can you make such tea?
---Just let the leaves in the water of 75 for some time.
A.to remain
B.remain
C.to leave
D.fall
灭火器及其附件安装设置要求有哪些?